Fuel feeding means for internal combustion engines



Jan. 17, 1939. M. G. CHANDLER 2,143,937

FUEL FEDING MEANS FOR INTERNAL COMBUSTION ENGINES Original Filed Feb. 6,1936 2 Sheets-Sheet 1 umm/ -1 Il," /J I IIIIID i Jan. 17, 1939. A M,CHANDLER 2,143,937

FUEL FEEDING MEANS FOR INTERNAL COMBUSTION ENGINES original Filed Feb.e, 193e 2 sneetsheet 2 1 5759 575g@ @QL/1% .Patented Jan. 17, 1939PATENT @FFME FUEL FEEDING MEANS FOR INTERNAL COMBUSTION ENGINES MilfordG. Chandler, Flint, Mich., assigner, by

mesne assignments, to Borg-Warner Corporation, Chicago, Ill., acorporation of Illinois Application February 6, 1936, Serial No. 62,657Renewed June 23, 1938 12 Claims.

This invention relates to new and useful improvements in fuel feedingmeans for internal combustion enginesand more particularly to animprovement on the device disclosed in my Pat- 5 ent No. 2,022,653,dated December 3, 1935, and my copending applications Serial Nos.725,665, 725,666 and 725,667, led May 14, 1934.

In the devices of said patent and applications there is disclosed a fuelfeeding means having a l plurality of piston and cylinder devices, thepistons and cylinders being carried on a revolvable rotor. The pistonsare reciprocated during ro-r tation of the rotor by means of a painI ofrelatively stationary annular cams which engage a l roller or rollerscarried on the piston. For the purpose of adjusting the stroke of thepistons, means is provided for shifting one of the cams toward and fromthe other. It is an object of this invention to provide a new andimproved i mechanism for adjusting the movably mounted cam of such adevice for the purpose of varying the stroke of the pistons and therebythe output of the fuel feeding means.

Another object of the invention is to provide x5 a new and improvedcontrol mechanism for such a fuel feeding means having a control elementpivotally mounted on one side of the casing of 1 the device, togetherwith means connecting said element to the adjustable cam operable tomove s the cam longitudinally of the casing when the controlelement ispivoted.

z Further objects will become readily apparent from the followingdetailed description taken in connection with the accompanying drawings,wherein:

Fig. 1 is a section along the line I-I of Fig. 2.

Fig. 2 is a plan view of a fuel feeding means embodying a preferred formof the invention.

Fig. 3 is a view of the control mechanism lookf ing at the left-hand endof Fig. 2.

Fig. 4 is a section along the line 4--4 of Fig. 3.

Fig. 5 is a view of a portion of the control looking at the right-handend of Fig. 4.

Fig. 6 is an enlarged fragmentary section along the line 6--6 of Fig. 1..g

Fig. 7 is a detail section along the line 'I-l of Fig. 3.

Fig. 8 is a detail section along the line 8-8 of Fig. 3.

Although a preferred form of the invention is shown in the drawings anddescribed hereinafter, it is to be understood that the invention is notto be limited to the particular arrangement shown, it being contemplatedthat various modifications and alternative constructions may be devisedby those skilled in the art Without departing from the spirit and scopeof the appended claims.

As illustrated in the drawings, a fuel feeding mfans is illustratedcomprising a tubular casing 5 having a head end 5 provided with aconical seat 'I in which a conical valve element or cone B is mounted.The valve element is secured in position by means of a strainerstructure or cap 9. A rotor It! is revolvably mounted upon the 10 cone 8and carries a plurality of pistons II reciprocably mounted in cylindersI2 formed in the rotor. The rotor is h eld on the cone 8 by meansincluding a ball bearing I3 the outer race I3 of which fits in a recessI4 in the rotor and the 15 inner race I3" of which is secured to thecone 8 by means of a stud I5 and nut I6 secured to one end of the stud.The other end of the stud is preferably headed and a coil spring I 'I ispositioned intermediate the head on the stud and a collar I8 suitablysecured to the cone 8. The detailed construction of these portions ofthe fuel feeding means are more particularly described and claimed insaid patent and copending y applications. 2D

Therpistons II are provided with driving projections II' which carryrollers 20 and engage shes 2| which carry additional rollers 22, therollers 20 being arranged to follow one stationary annular cam 23,whereas the rollers 22 follow along a second annular cam 24. These camsare mounted on the casing 5 and are held against rotational movement,the cam 23 being fixed against longitudinal movement also, whereas thecam 24 is adjustable longitudinally of the casing d for the purpose ofvarying the stroke of the pistons II. The contours of the cams and thecony struction of the roller and shoe mechanism are all fully disclosedin said pending applications, and it is to the means for adjusting thecam 24 longitudinally of thecasing 5 that the present invention isparticularly directed.

As illustrated herein, the cam 24 has a tubular portion 24 and a lug 24"projecting radially from 45 one side of the tubular portion. The lug 24"fits in an electric slot 25 in a circular disk 26 which is rotatablymounted in an eccentric recess 21 formed in a rotary control member 28.The member 28 is rotatably mounted on and extends 50 into a bushing 29which is secured to the casing 5 by means of a plurality of bo1ts 30(Fig. 2) and forms spaced bearing surfaces at 3| and 32 engagingcorresponding cylindrical surfaces 33 and 34 on the member 2B. One end28' of the mem- 55 ber 28 projects outwardly from the bushing 28 andcarries a control element 35.

As illustrated herein, the projecting end 28 of the member 28 is ofreduced diameter and in addition to the control element 35 carries abear-l ing plate 36 positioned against the control element 35, a collarportion 3l of an indicating pointer 3l', bushing 38, a member 39 and anut 40, a suitable cotter pin 4I serving to hold the nut d@ againstrotation. The bearing plate 35 along its inner edge is clamped against ashoulder 28" (Fig. 4) on the member 28 and hasits lower surface inoperative engagement with an annular sealing ring 42, which ring ispositioned in an annular recess 43' in the bushing 29 and is urged intosealing' engagement with the plate 38 b means of suitable packingmaterial M.

In order to facilitate locating the control element 35 onvthe member 28'so that it may extend radially there-from, in any one of a plurality ofdirections, the portion 28' of the member 28 is preferably formed with asquare portion 5@ (Figs. 1, 4 and 6) which fits into a sixteentoothedrecess l formed in the plate 35 so that the plate 36 may be located inany one of sixteen different angular positions with respect to themember 28. Since the control element 35 in turn is secured to thebearing plate 38, the control element may thus be adjusted angularlywith the plate 38. Furthermore, means is herein provided for adjustingthe control element 35 angularly with respect to the plate 38 to obtaina more accurate adjustment. In the preferred form of the inventionillustrated, the plate 35 is provided with a radial recess 53 (Figs. 1,2, 6 and and a pin 5@ carried on an extension 55 of the control element35 has at its lower end an eccentric and circular disk portion 55 whichts into the recess 53. The pin 5d may be rotated by inserting'a suitablerod in a diametric hole 5l in the upper portion of the pin (the skirt 5lof the control element 35 being recessed at 6l" to provide clearance),the pin when rotated causing the eccentric portion 56 to move thecontrol element 35 angular-1y with respect to the plate 35. After makingthe minute adjustment thus obtainable, a nut 58 on the pin 54 may betightened and secured in its tightened position by means of a cotter pin5d.

In order to provide a visual indication of the location of the controlcam 2li, an arcuate scale 68 is suitably mounted on an extension 82 ofthe bushing 29, the end of the pointer 3i extending over said-scala Thescale preferably has threaded pins 65 extending through arcuate slots 62in the extension 52 to receive nuts 5d" so that upon adjusting the scaleand tightening the nuts the adjustment may be sealed by a wire 168 (Fig.5) and seal 59, the wire passing through suitable cotter pin holes inthe pins and nuts.

Asillustrated most clearly in Figs. 2, 4 and '7, the control element 35is provided with a skirt portion 5l which surrounds the plate 36 and theadjacent end of the bushing 29 so as to form a guard for the bearing.This skirt portion is preferably'reduced Yin thickness at 5l (Fig. '7)so as to provide clearance for screws 38 which extend through thecorners of a rectangular flange G3 on the bushing 29 to secure thecontrol to the casing 5 of the fuel feeding means. To locate the bushing29 on the casing 5 a pin 55 (Fig. 1) may be' anchored in the casing 5and project into a .suitable vrecess 5E in the bushing flange 63.

. Not only does the invention provide a simple and accurate means foradjusting the cam 2li for varying the stroke of the fuel feeding means,the means for adjusting the control element angularly with respect tothe member 28 also serving to facilitate installation of the fuelfeeding means on an engine vand the connection of the control element toother control devices. In this manner the idling position of the controlelement 35 may be accurately determined. The connection between th'ebearing plate 38 and the member 28 provides for an approximateadjustment of the control element 35, after which an accurate adjustmentthereof may be obtained by the adjusting pin 54.

I claim as my invention:

1. In a fuel feeding means for internal combustion engines having anelement adjustable rectilinearly for varying the quantity of fueldischarged, a control mechanism comprising a bushing having'longitudinally spaced annular bearing surfaces, a shaft rotatablymounted in said bushing and having portions engaging said bearingsurfaces and an eccentrically located circular recess in one endthereof, a circular member rotatably positioned in said recess andhaving an eccentric slot for operatively engaging a portion of saidelement, a bearing plate secured to said shaft adjacent the outer end ofsaid bushing, a sealing ring mounted on said bushing for engaging saidplate, a control arm mounted on said shaft, and means for securing saidcontrol arm to said shaft in various angularly adjusted positions.

2. In a fuel feeding means for internal combustion engines having anelement adjustable rectilinearly for varying the quantity of fueldischarged, a control mechanism comprising a supporting bushing, a shaftrotatably mounted in said bushing and having an eccentrically locatedcircular recess in one end thereof, a circular member in said recesshaving an eccentric slot for operatively engaging a portion of saidelement. a bearing plate secured to said shaft adjacent the outer end ofsaid bushing, a sealing ring mount` ed on said bushing for engaging saidplate, a control arm mounted on said shaft, and means for securing saidcontrol arm to said shaft in various angularly adjusted positions.

3. In a fuel feeding means for internal combustion engines having anelement adjustable rectilinearly for varying the quantity of fueldischarged, a control mechanism comprising a support, a shaft rotatablymounted on said support having an eccentrically located circular recessin one end thereof, a member positioned in said recess having aneccentric slot for operatively engaging a portion of said element, acontrol arm mounted on said shaft, and means for securing said controlarm to said shaft in various angularly adjusted positions.

4. In a fuel feeding means for internal combustion engines having anelement bodily 4adjustable rectilinearly for varying the quantity offuel discharged, a control mechanism comprising a support, a rst memberrotatably mounted on said support, and a second member eccentricallypositioned on said rst member for rotation relative thereto and havingeccentric means operatively engaging a portion of said element to shiftthe same bodily upon rotation of said first mem-a ber.

5. In a fuel feeding means yfor internal combustion engines having anelement adjustable` rectilinearly for varying the quantity of fueldischarged, a control mechanism comprising a bushing havinglongitudinally spaced annular bearing amaca? surfaces, a shaft rotatablymounted in said bushing and having portions engaging said bearingsurfaces and an eccentrically located circular recess in one endthereof, a circular member rotatably positioned in said recess andhaving an eccentric slot for operatively engaging a portion of saidelement, a bearing plate adapted to be secured to said shaft in any oneof a plurality of angularly spaced positions, a control arm carried onsaid bearing plate and adjustable angularly with respect thereto, andmeans for adjusting said control arm with respect to said platecomprising opposed radially extending shoulders on said plate, a pinrotatably mounted eccentrically on said control arm and having aneccentric circular portion engaging said shoulders, and means forsecuring said pin in its adjusted position.

6. In a fuel feeding means for internal combustion engines having anelement adjustable rectilinearly for varying the quantity of fueldischarged, a control mechanism comprising a support, a shaft rotatablymounted in said support and having an eccentricallyI located circularrecess in one end thereof, a circular member rotatably positioned insaid recess and having an eccentric slot for operatively engaging aportion of said element, a plate adapted to be secured to said shaft inany one of a plurality of angularly spaced positions, a control armcarried on said plate and adjustable angularly with respect thereto, andmeans for adjusting said control arm with respect to said platecomprising a radially extending recess in said plate. l

'7. In a fuel feeding means for internal combustion engines having anelement adjustable for varying the quantity of fuel discharged, acontrol mechanism comprising a support, a shaft rotatably mounted insaid support and having an eccentrically located circular recess in oneend thereof, a circular member rotatably positioned in said recess andhaving an eccentric slot for operatively engaging a portion of saidelement, a plate adapted to be secured to said shaft in any one of aplurality of angularly spaced positions, a control arm carried on saidplate and adjustable angularly with respect thereto, and means foradjusting said control arm with respect to said plate comprising aradially extending recess in said plate and a pin rotatably mountedeccentrically on said control arm and having an eccentric circularportion engaging in said recess.

8. In a fuel feeding means for internal combustion engines having anelement adjustable for varying the quantity of fuel discharged, acontrol mechanism comprising a rotatably mounted shaft, means forming anoperative connection between said shaft and said element, a memberadapted to be secured to said shaft in any one of a plurality ofangularly spaced positions, a control arm carried on said member andadjustable angularly with respect thereto, and means for adjusting saidcontrol arm with respect to said member comprising opposed shoulders onsaid member and a pin rotatably mounted eccentrically on said controlarm and having an eccentric portion engaging said shoulders.

9. In a fuel feeding means for internal combustion engines having anelement adjustable lrectilinearly for varying the quantity of fueldischarged, a control mechanism comprising a support, a shaft rotatablymounted on said support having an eccentrically located recess in oneend thereof, a member positioned in said recess having means foroperatively engaging a portion of said element to shift the samerectilinearly upon rotation of said shaft, and a control arm mounted onsaid shaft.

10. In a fuel feeding means for internal combustion engines having anelement adjustable rectilinearly for varying the quantity of fueldischarged, a control mechanism comprising a support, a shaft rotatablymounted on said support, a member eccentrically positioned on said shaftfor rotation relative thereto and having means for operatively engaginga portion of said element, a control arm mounted on said shaft, andmeans for securing said control arm to said shaft in various angularlyadjusted positions comprising means having a radially extending recessrotatable with said shaft, and a pin rotatably mounted eccentrically onsaid control arm and having an eccentric portion engaging in saidrecess.

11. In a fuel feeding means for internal combustion engines having anelement adjustable for varying the quantity of fuel discharged, acontrol mechanism comprising a rotatably mounted shaft, means forming anoperative connection between said shaft and said element, a memberadapted to be secured to said shaft in any one of a plurality ofangularly spaced positions for obtaining a rough adjustment between theshaft and the member, a control arm carried on said member, and meansfor adjusting said control arm angularly with respect to said member toobtain a fine adjustment between said control arm and said shaft.

12. In a fuel feeding means for internal combustion engines having anelement adjustable for varying the quantity of fuel discharged, acontrol mechanism comprising a rotatably mounted shaft, means forming anoperative connection between said shaft and said element, a control armadjustable angularly with respect to said shaft, and means for adjustingsaid control arm with respect to said shaft comprising opposed shouldersrotatable with said shaft, and a pin rotatably mounted eccentrically onsaid control arm and having an eccentric portion disposed between saidshoulders.

WORD G. CHANDLER.

- cERTFcATE oF ycoRREcTIoN. Patenpmo, 2,115,951, January `1'?, 1959MILFORD G. CHANDLER.

It is hereby ,certified that error appears in the printedspecifica/ation ofthe above numbered patent requiringcorrectionas'follows: Page l9 second column, line 1;?, for the word"electric" read eccentric; fand that the lsaid Letters Patent should beread. with this 'correction therein'tht the same may conforl to therecord ci` the case in the Patent Office.

\ Vsigned and. sealed this 6th day of June, A, D 1939 Henry Van Arsdale(Seal) I Acting Commissioner of' Patents.

